申请人:Schering Corporation
公开号:US06372909B1
公开(公告)日:2002-04-16
Disclosed is a process for preparing a compound having the formula:
wherein R, R1, R2, R3, and R4 are independently selected from the group consisting of H, Br, Cl, F, alkyl, or alkoxy, by
(A) reacting a compound having the formula
wherein RA, RC, RD, and RE are independently selected from the group consisting of H, halo, alkyl, or alkoxy, and R5 is aryl or heteroaryl, with
a dehydrating agent to produce an imine having the formula:
(B) hydrolyzing the imine produced in step (A) to produce the compound having formula (I). Also disclosed are novel intermediates having the formula:
wherein RA, RB, RC, RD, and RE are independently selected from the group consisting of H, halo, alkyl, or alkoxy, and R5 is aryl or heteroaryl. Also disclosed is a process for preparing a compound having the formula:
comprising:
reacting a compound having the formula:
with NH2R5 in the presence of a palladium catalyst, carbon monoxide, a base, and an ether selected from the group consisting of: CH3OCH2CH2OCH3; CH3OCH2CH2OCH2CH2OCH3; and CH3OCH2CH2OCH2CH2OCH2CH2OCH3, wherein X is H, Br, Cl, or F, and R5 is aryl or heteroaryl. The compounds made by these processes are useful intermediates for preparing compounds that are antihistamines or inhibitors of farnesyl protein transferase.
本文公开了一种制备具有以下式子的化合物的方法:其中R、R1、R2、R3和R4独立地选择自H、Br、Cl、F、烷基或烷氧基的群组,方法包括:(A)将具有以下式子的化合物与脱水剂反应,生成具有以下式子的亚胺:其中RA、RC、RD和RE独立地选择自H、卤素、烷基或烷氧基的群组,R5为芳基或杂环基;(B)水解步骤(A)中生成的亚胺,生成具有式子(I)的化合物。本文还公开了具有以下式子的新中间体:其中RA、RB、RC、RD和RE独立地选择自H、卤素、烷基或烷氧基的群组,R5为芳基或杂环基。本文还公开了一种制备具有以下式子的化合物的方法:其中X为H、Br、Cl或F,R5为芳基或杂环基,方法包括:将具有以下式子的化合物与NH2R5在钯催化剂、一氧化碳、碱和选择自CH3OCH2CH2OCH3、CH3OCH2CH2OCH2CH2OCH3和CH3OCH2CH2OCH2CH2OCH2CH2OCH3的醚的存在下反应。这些方法制备的化合物是制备抗组胺药或法尼酰基蛋白转移酶抑制剂的有用中间体。